Author-submitted data information
| ID | 428 |
| Title | Multi-proxy reconstruction of East Asian summer monsoon circulation index over the past 500 years |
| Creator | Feng Shi |
| Subject | East Asian summer monsoon circulation index |
| Publisher | Xiukuan Zhao |
| Description | This East Asian summer monsoon circulation index over the past 500 years is reconstructed using 23 multi-proxy records and the Optimal Information Extraction (OIE) method. We screened 23 proxy records including 2 tree ring width chronologies and 10 tree ring δ18O chronologies, 7 speleothem δ18O records, and 4 historical documentary records. The OIE method was derived from the traditional Composite Plus Scale method, and inspired by the local (LOC) method, a Bayesian framework, and the generalized likelihood uncertainty estimation method. The main advantage of the OIE method is to efficiently retain low-frequency climate signals since the nonlinear process of proxy records in response to climate is considered based on Bayesian theory. The dataset includes a table, which is the East Asian summer monsoon circulation index over the interdecadal to multidecadal time scales. The reconstructed target is the instrumental East Asian summer monsoon circulation index, which is defined by a north–south gradient of the zonal wind at 850 hPa (the U850 in (5°–15°N, 90°–130°E) minus U850 in (22.5°–32.5°N, 110°–140°E)). All data are smoothed by the 6th-order bandpass Butterworth filter. The cut-off frequency for the interdecadal to multidecadal component is [1/101, 1/9]. |
| Contributor | Hugues Goosse, Jianping Li, Qiuzhen Yin, Fredrik Charpentier Ljungqvist, Tao Lian, Cheng Sun, Lin Wang, Zhiwei Wu, Juan Li, Sen Zhao, Chenxi Xu, Wei Liu, Ting Liu, Takeshi Nakatsuka, Zhengtang Guo |
| Date | 1470–1998 CE |
| Type | The table includes three columns. The 1st column is year (CE), the 2nd column showed the median values of the ensemble reconstruction of the East Asian summer monsoon, and the 3rd column is the instrumental East Asian summer monsoon index. |
| Format | .xlsx, available in Microsoft Excel |
| URL | http://www.geophys.ac.cn/ArticleData/20220921EASMI.zip |
| DOI | 10.12197/2022GA029 |
| Source | |
| Language | eng |
| Relation | |
| Coverage | |
| Rights | Institute of Geology and Geophysics, Chinese Academy of Sciences |